Lightroom documentation re large tiff images is ambiguous/wrong

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  • Updated 6 years ago
One of the most glaring issues (for me) in Lightroom is its inability to display "psb" files.

The documentation for LR 4 (help file) says on p. 18 "Lightroom supports large documents saved in TIFF format (up to 100 million pixels with pixel dimensions of no more than 10,000 on a side). However, most other applications, including older versions of Photoshop (pre-Photoshop CS), do not support documents with file sizes greater than 2 GB."

This indicates to me, that Lightroom and Photoshop (post CS) should support large (> 4GB) TIFF files. (As you know, bigtiff is now part of the TIFF specification). However, Photoshop CS 5 does NOT support TIFFs > 4 GB, and I presume (not having one to test with), that Lightroom 4 also does not support TIFFs greater than 4 GB.

Ideally, you should make Lightroom and Photoshop support TIFFs greater than 4 GB, minimizing the need for the proprietary (and partially supported) psb file format. Failing that, you should modify the documentation indicating that you are talking about TIFF files < 4 GB in size.
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Alan Harper

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Posted 6 years ago

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